Spinal Villain

Burnout

Counter target instant spell if it's blue.
Draw a card at the beginning of the next turn's upkeep.

Magnetic Mountain

Blue creatures don't untap during their controllers' untap steps.
At the beginning of each player's upkeep, that player may choose any number of tapped blue creatures they control and pay {4} for each creature chosen this way. If the player does, untap those creatures.

Omen of Fire

Return all Islands to their owners' hands. Each player sacrifices a Plains or a white permanent of their choice for each white permanent they control.

Alchor's Tomb

{2}, {T}: Target permanent you control becomes the color of your choice. (This effect lasts indefinitely.)

Guma

Havoc

Whenever an opponent casts a white spell, they lose 2 life.

Heat Wave

Cumulative upkeep {R} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
Blue creatures can't block creatures you control.
Nonblue creatures can't block creatures you control unless their controller pays 1 life for each blocking creature they control.

Defender of Chaos

Magistrate's Veto

White creatures and blue creatures can't block.

Lightning Dart

Lightning Dart deals 1 damage to target creature. If that creature is white or blue, Lightning Dart deals 4 damage to it instead.

Active Volcano

Choose one —
• Destroy target blue permanent.
• Return target Island to its owner's hand.

Red Elemental Blast

Choose one —
• Counter target blue spell.
• Destroy target blue permanent.

Pyroblast

Choose one —
• Counter target spell if it's blue.
• Destroy target permanent if it's blue.

Evaporate

Evaporate deals 1 damage to each white and/or blue creature.

Disorder

Disorder deals 2 damage to each white creature and each player who controls a white creature.

Beasts of Bogardan

Protection from red
This creature gets +1/+1 as long as an opponent controls a nontoken white permanent.

Sisters of the Flame

Mountain

Mountain Yeti

Mountainwalk (This creature can't be blocked as long as defending player controls a Mountain.)
Protection from white